On a PC or Mac: Go to https://www.office.com and login. On the Office 365 homepage, click “Install Office App” and then “Office 2016”.
iOS version: Go to App Store to download the app of Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook and Microsoft OneNote
Android version: Go to Google Play to download the app of Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook and Microsoft OneNote
Windows 10 version: Go to Windows Phone Store to download the app of Word, Excel, PowerPoint, Outlook and OneNote (most Windows 10 smartphones and tablet already have Office Apps installed)